search

arduino / arduino-examples

Arduino IDE bundled examples
Creative Commons Zero v1.0 Universal
92 stars 42 forks source link

tonePitchFollower schematic doesn't match text description #38

Open TheOldBrick opened 3 years ago

TheOldBrick commented 3 years ago

On https://www.arduino.cc/en/Tutorial/BuiltInExamples/tonePitchFollower

Text says: "Connect one terminal of your speaker to digital pin 9" Schematic shows speaker connected to digital pin 8 Software: tone(9, thisPitch, 10);

Text says: "Hardware Required...100 ohm resistor" "Connect one terminal of your speaker to digital pin 9 through a 100 ohm resistor" Schematic shows speaker connected through 10K ohm resistor

=====

When I completed this project, I connected the speaker through a 220 ohm resistor. 100 ohm resistor + 8 ohm speaker = 46.3 mA 220 ohm resistor + 8 ohm speaker = 21.93 mA

TheOldBrick commented 3 years ago

On https://www.arduino.cc/en/Tutorial/BuiltInExamples/toneMultiple

Text says: "Hardware Required...3 100 ohm resistor" Schematic says: "10kΩ RESISTORS"